United Microelectronics Aug sales up 30.71%
UMC reports strong year-on-year increases in August and year-to-date 2026 net sales, with no August funds lent or guarantees and limited derivatives activity.
Rhea-AI Filing Summary
United Microelectronics Corporation (UMC) reports that August 2026 net sales were NT$25,044,641 thousand, up from NT$19,159,816 thousand in August 2025, an increase of 30.71%. Year-to-date 2026 net sales were NT$178,659,250 thousand versus NT$155,816,479 thousand a year earlier, a 14.66% increase.
The company states that for August 2026 it had no funds lent to other parties and no endorsements or guarantees outstanding. UMC reports activity in interest rate swap financial derivatives, including unwritten-off trading contracts of NT$1,138,320 thousand, a fair value of NT$9,719 thousand, and a realized loss of NT$33,746 thousand. UMC also plans to attend institutional investor conferences in New York on September 10, 2026, and in Taipei on September 14–15, 2026.
Positive
- August 2026 net sales rose 30.71% year-on-year to NT$25,044,641 thousand, indicating significantly higher monthly revenue versus August 2025.
- Year-to-date 2026 net sales increased 14.66% to NT$178,659,250 thousand compared with the same period in 2025, showing solid revenue growth.
- The company reports no funds lent to other parties and no endorsements or guarantees outstanding for August 2026, limiting certain balance-sheet risks.
Negative
- UMC reports a realized loss of NT$33,746 thousand on written-off interest rate swap trading contracts in August 2026.
Key Figures
Key Terms
institutional investor conference financial
financial derivative transactions financial
endorsements and guarantees financial
unwritten-off Trading Contracts financial
Fair Value financial
FAQ
How did UMC (UMC) perform in terms of August 2026 net sales?
What are UMC’s year-to-date 2026 net sales compared with 2025?
Did UMC lend funds to other parties in August 2026?
Did UMC have any endorsements or guarantees outstanding in August 2026?
What financial derivatives activity did UMC (UMC) report for August 2026?
Which investor conferences will UMC attend in September 2026?
AI-generated analysis. How Rhea-AI works. Not financial advice.
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 6-K
REPORT OF FOREIGN ISSUER
PURSUANT TO RULE 13a-16 OR 15d-16
OF THE SECURITIES EXCHANGE ACT OF 1934
September 4, 2026
(Commission File Number: 001-15128)
United Microelectronics Corporation
(Translation of registrant’s name into English)
No. 3 Li-Hsin 2nd Road,
Hsinchu Science Park,
Hsinchu, Taiwan, R.O.C.
(Address of principal executive office)
Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.
Form 20-F Form 40-F
Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101 (b) (1):
Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101 (b) (7):
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereto duly authorized.
United Microelectronics Corporation |
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|
|
|
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By: |
Chitung Liu |
Name: |
Chitung Liu |
Title: |
CFO |
Date: September 4, 2026
2
EXHIBIT INDEX
Exhibit |
|
Description |
99 |
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6K on 09/04/2026 |
3
www.umc.com
Exhibit
Exhibit Description
99.1 Announcement on 2026/09/03: UMC will attend investor conferences on 2026/09/10
99.2 Announcement on 2026/09/03: UMC will attend investor conferences on 2026/09/14~2026/09/15
99.3 Announcement on 2026/09/04: August Revenue
Exhibit 99.1
UMC will attend investor conferences on 2026/09/10
1. Date of institutional investor conference: 2026/09/10
2. Time of institutional investor conference: 09:30 PM
3. Location of institutional investor conference: New York Hilton Midtown
4. Outline of institutional investor conference:
The Company will attend the “2026 GEMs Conference”, held by Citi.
5. Any other matters that need to be specified: None
Exhibit 99.2
UMC will attend investor conferences on 2026/09/14~2026/09/15
1. Date of institutional investor conference: 2026/09/14~2026/09/15
2. Time of institutional investor conference: 09:00 AM
3. Location of institutional investor conference: W Hotel Taipei
4. Outline of institutional investor conference:
The Company will attend the “Taiwan Summit 2026”, held by UBS.
5. Any other matters that need to be specified: None
Exhibit 99.3
United Microelectronics Corporation
September 4, 2026
This is to report the changes or status of 1) Sales volume, 2) Funds lent to other parties, 3) Endorsements and guarantees, and 4) Financial derivative transactions for the period of August 2026.
Period |
Items |
2026 |
2025 |
Changes |
% |
August |
Net sales |
25,044,641 |
19,159,816 |
5,884,825 |
30.71% |
Year-to-Date |
Net sales |
178,659,250 |
155,816,479 |
22,842,771 |
14.66% |
a Not under hedging accounting: NT$ thousand
UMC
Financial instruments |
Option |
Forwards |
IRS |
|
Put |
Call |
|||
Deposit Paid |
0 |
0 |
0 |
0 |
Royalty Income (Paid) |
0 |
0 |
0 |
0 |
Unwritten-off Trading |
|
|
|
|
Contracts |
0 |
0 |
1,138,320 |
0 |
Fair Value |
0 |
0 |
9,719 |
0 |
Net profit (loss) from Fair Value |
0 |
0 |
10,372 |
0 |
Written-off Trading |
|
|
|
|
Contracts |
0 |
0 |
9,159,030 |
0 |
Realized profit (loss) |
0 |
0 |
(33,746) |
0 |